In today's society, we can see solar street lights everywhere. This paper first introduces the components of solar street lights, then elaborates the working principle and advantages of solar street lights, and then introduces the application field and application principles of solar street lights.
Solar street lamp component
1. Solar photovoltaic modules
Components are mainly divided into single crystal and polycrystal two parts, of course, single crystal polycrystal is also divided into A side and B side, so this is why the market on the same configuration of the component price will be so much difference, from the appearance of the general people can not see what. The modules use the sun's energy to convert it into electricity that can be stored in a battery. The conversion rate is currently as high as 17 percent for single crystals and around 12 percent for polycrystals.
2, solar energy special battery
The function of storage battery as the storage and release of electric energy, can be installed on the lamp pole or buried in the ground, the function of the battery box is as a protective effect of the battery in the ground, the battery will not be corroded by groundwater, the working principle of the battery is to store the energy converted by solar photovoltaic modules in the body during the day, to the controller instruction to discharge time at night, The quality of the products of the manufacturers with different technical capabilities and the corresponding prices have a world of difference.
3. Solar controller
The backbone of the street lamp system, the heart, for example, the human heart is good, no problem people can run well normally, if the heart has a problem or failure of other body parts no matter how good will not be useful. The quality of the controller directly affects the life of the solar street lamp system, it is best to choose a certain brand, such as Nanjing Putian, Shenzhen Shuori lamp and so on.
4. led light source
Now on the market is generally better to use flat lamp holder, light source optional, mainly in these two accessories, the traditional led lamp shell, the heat dissipation performance is a little bit worse, flat plate lamp holder flat, looks more high-grade, lamp holder built-in heat dissipation, light source has domestic, imported, domestic technology reasons generally or mainly imported, Imported to do a better Prey, Corey, Prey also has 33 with 45 two points, different material selection led light source prices are also different
5. Solar street lamp pole
The light pole part is customized according to the requirements of the customer for the rod type and configuration parameters at the beginning of the design. Size, style requirements are different, the price difference is big.
How solar street lights work
The working principle of the solar street lamp is to convert the solar energy into electricity so as to achieve lighting. On the top of the street lamp is a solar panel, also known as a photovoltaic module. During the day, these photovoltaic modules made of polysilicon convert the solar energy into electricity and store it in the battery. It absorbs solar light and converts it into electricity. During the day, the solar module charges the battery bank. In the evening, the electric energy is transmitted to the light source through the control of the controller, for people to light at night. At night, the battery provides power to the LED light source to achieve lighting.
Solar street lights generate electricity through solar energy, so there are no cables, no leakage and other accidents. The DC controller can ensure that the battery pack is not damaged due to overcharge or overdischarge, and has the functions of light control, time control, temperature compensation, lightning protection, reverse polarity protection, etc. No cables are laid, no AC power supply is required, and no electricity charges are generated.
A series of advantages such as low carbon environmental protection, safety and reliability of solar street lamps have been recognized by the majority of customers, and thus have been vigorously promoted. Therefore, it can be widely used in urban main and secondary roads, residential areas, factories, tourist attractions, parking lots and other places.
Advantages of solar street lights
1, wide energy
Solar street lamps use solar photovoltaic cells to provide electric energy. Solar energy, as a new green energy, is "inexhaustible". Making full use of solar energy resources is of positive significance to relieve the shortage of conventional energy.
2, easy to install
The installation of solar street lamp is simple and convenient. It does not need to do a lot of basic engineering such as laying cables like ordinary street lamp. It only needs to have a fixed base, and all the lines and control parts are placed in the lamp holder to form a whole.
3. Low maintenance cost
Solar street lamps are powered by solar energy, which costs almost nothing to operate except for a small amount of electricity costs when they are switched to mains electricity on rainy days. The operation of the whole system is automatic control, no human intervention, almost no maintenance costs.
The advantages of solar street lamp compared with ordinary street lamp
1. Installation comparison
When installing, there is no need to set up complex lines, only a cement base and a battery pit within 1m, fixed with galvanized bolts can be done. There are complicated operation procedures in the construction of street lamps. First of all, it is necessary to set up cables, dig trenches and pipe distribution, pipe threading, backfill and other large amounts of civil construction, consuming a lot of manpower, material resources and financial resources. Finally, there is debugging, and once there is a problem, it will cause a lot of consumption.
2. Cost comparison
Solar street lamp is a one-time investment, long-term benefits, because the line is simple, no maintenance costs, no expensive electricity. 6-7 years to recover the cost, after 3-4 years to save more than 1 million electricity and maintenance costs. The electricity cost of street lamps is high, the line is complex, and the line needs to be repaired continuously for a long time. Especially under the condition of unstable voltage, it is inevitable for sodium lamp to be broken, and with the extension of years, line aging and maintenance costs are increasing every year.
3. Security comparison
Solar street lamp because of the use of 12-24V low voltage, stable voltage, reliable operation, no safety risks, is the ideal product of ecological community, road department. Mains street lamps have big security risks. People's living environment is constantly changing, road transformation, landscape engineering construction, power supply is not normal, cross construction of water and gas pipelines and other aspects bring many risks.
4. Comparison of environmental protection
Solar street lamps can add a new selling point to the development and promotion of noble ecological community; Sustainable reduction of property management costs, reduce the owners of the public share of the cost. In summary, the solar lighting safety without hidden dangers, energy saving without consumption, green environmental protection, easy installation, automatic control and maintenance-free inherent characteristics will be for the sale of real estate, the construction of municipal engineering directly bring obvious advantage.
5, life comparison
The life of solar lamps and lanterns is much higher than that of ordinary electric lamps and lanterns, such as the service life of the main component of solar lamps and lanterns ---- solar cell module 25 years; Average life of low pressure sodium lamp 18,000 hours; The average life of low-voltage high-efficiency three-primary color energy-saving lamp is 6000 hours; The average life of super bright LED is more than 50000 hours; Solar special battery life for 38AH below 2-5 years; 3-7 years of 38-150AH. According to the conventional residential area according to the local price bureau "according to the pure residential building area one-time charge residential street lamp maintenance fee of 6 yuan/square meters", so that the initial investment of ordinary lamps is much higher than the initial investment of solar lamps. In short, comprehensive comparison of solar lamps and lanterns to save investment characteristics is quite obvious.
Solar street lamp application field
1) Roads in marginal areas such as villages and towns are connected to lighting.
2) City square, parking lot, school playground, workers' green space, park lighting.
3) Golf course, beach, high-end villa area lighting.
4) Highway warning signs, bridge street lamp power replacement, etc.
Application principle of solar street lamp
1. The principle of practicality
The main purpose of solar street lamp application in urban lighting system is to save energy consumption, but because it is greatly affected by weather factors, for cloudy days and areas with high power requirements, solar street lamp may not fully meet the lighting needs. Based on this, in the application design, it is necessary to combine the design effect of the original street lamp system, increase the solar power supply, realize the complementarity of the mains power supply and the solar power supply, ensure that the power supply can be switched to the mains power supply in time when the solar power supply is insufficient, and improve the application efficiency of the entire lighting system.
2. The principle of efficiency
In the application design, it is necessary to meet the functional requirements of the lighting system on the basis of reasonable design to improve its application efficiency, reduce the energy consumption of the system and reduce pollution. Achieve the purpose of energy saving and environmental protection. In addition, for the application of solar street lamp design. In order to ensure its high application efficiency after being put into use, it is also necessary to do a good job in the analysis of local geographical factors, meteorological factors and other aspects of the project, to carry out a detailed investigation and analysis of sunshine time, fog hoop weather and rainy weather and other actual conditions, combined with the actual situation to adjust the design scheme at any time, so as to meet the needs of the lighting system to the greatest extent.
3. Traffic safety principles
The main purpose of urban road lighting system construction is to ensure traffic safety, and improve the efficiency of transportation on this basis, to provide a safe and comfortable environment for traffic operation. Therefore, the construction and application of solar street lamp must follow the principle of traffic safety. In combination with the actual needs of local traffic, reasonable design. Ensure that all aspects of design meet the requirements of use. Above is the working principle of solar street lamp, hope to give you a reference.